Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W7FZ callsign genealogy
Currently held by SHAFER, ROBERT M
The FCC publishes a previous_call_sign on
every amateur license — a self-link to the licensee's prior callsign.
Following those links produces the chain below.
Previous callsigns
Older callsigns held by W7FZ's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held W7FZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W7FZ, oldest first.
- SHAFER, ROBERT M UT2006-08-25 → cancelled 2015-07-13
- Schmidt, Windsor P CA2017-08-01 active